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首页> 外文期刊>Environmental toxicology and chemistry >FOOD-CHAIN TRANSFER OF CADMIUM AND ZINC FROM CONTAMINATED URTICA DIOICA TO HELIX ASPERSA AND LUMBRICUS TERRESTRIS
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FOOD-CHAIN TRANSFER OF CADMIUM AND ZINC FROM CONTAMINATED URTICA DIOICA TO HELIX ASPERSA AND LUMBRICUS TERRESTRIS

机译：从污染的二氧化铀到镉的食物链转移镉和螺旋藻和

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摘要

The present study examines the potential of Urtica dioica as an ecologically relevant species for use in ecotoxicological testing. It is prevalent in degraded ecosystems and is a food source for invertebrates. Urtica dioica grown in hydroponic solutions containing from less than 0.003 to 5.7 mg Cd/L or from 0.02 to 41.9 mg Zn/L accumulated metals resulting in leaf tissue concentrations in the range of 0.10 to 24.9 mg Cd/kg or 22.5 to 2,772.0 mg Zn/kg. No toxicological effects were apparent except at the highest concentrations tested, suggesting that this species may be an important pathway for transfer of metals to primary plant consumers. Helix aspersa and Lumbricus terrestris were fed the Cd- and Zn-rich leaves of U. dioica for six and four weeks, respectively. Cadmium and Zn body load increased with increasing metal concentration in the leaves (p < 0.001). Ratios of invertebrate metal concentration to leaf metal concentration were in the range of 1:0.03 to 1:1.4 for Cd and 1:0.2 to 1:2.8 for Zn in H. aspersa and 1:0.002 to 1:3.9 for Cd and 1:0.2 to 1:8.8 for Zn in L. terrestris. Helix aspersa Cd and Zn tissue concentrations (15.5 and 1,220.2 mg/kg, respectively) were approximately threefold those in L, terrestris when both species were fed nettle leaves with concentrations of approximately 23 mg Cd/kg and 3,400 mg Zn/kg. Models demonstrate that L. terrestris Cd tissue concentrations (r~2 = 0.74, p < 0.001) and H, aspersa Zn tissue concentrations (r~2 = 0.69, p < 0.001) can be estimated from concentrations of Cd and Zn within the leaves of U. dioica and suggest that reasonably reproducible results can be obtained using these species for ecotoxicological testing.
机译：本研究检查了荨麻二恶草作为生态相关物种用于生态毒理学测试的潜力。它普遍存在于退化的生态系统中，是无脊椎动物的食物来源。在水耕溶液中生长的荨麻二恶英含量低于0.003至5.7 mg Cd / L或0.02至41.9 mg Zn / L积累的金属，导致叶片组织浓度范围为0.10至24.9 mg Cd / kg或22.5至2,772.0 mg锌/公斤。除了在最高测试浓度下，没有明显的毒理作用，这表明该物种可能是金属向初级植物消费者转移的重要途径。分别给螺旋藻和Lu虫喂食了U. dioica的富含Cd和Zn的叶子六周和四个星期。镉和锌的身体负荷随着叶片中金属浓度的增加而增加（p <0.001）。 C. aspera中Cd的无脊椎动物金属浓度与叶片金属浓度的比率在1：0.03至1：1.4范围内，Zn在1：0.2至1：2.8范围内，Cd和1在1：0.002至1：3.9范围内藜中的Zn为0.2至1：8.8。当两种植物都以约23 mg Cd / kg和3,400 mg Zn / kg的浓度饲喂荨麻叶时，螺旋曲霉Cd和Zn的组织浓度（分别为15.5和1,220.2 mg / kg）约为陆地藜L的三倍。模型表明，可以根据叶片中Cd和Zn的浓度估算出陆地藜Cd组织浓度（r〜2 = 0.74，p <0.001）和H，aspersa Zn组织浓度（r〜2 = 0.69，p <0.001）。并提出使用这些物种进行生态毒理学测试可以获得合理可重复的结果。

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  • 来源
    《Environmental toxicology and chemistry》 |2009年第8期|1756-1766|共11页
  • 作者

    Danielle E. Sinnett; Mark E. Hodson; Tony R. Hutchings;

  • 作者单位

    Centre for Forestry and Climate Change, Forest Research, Alice Holt Lodge, Farnham, Surrey GU10 4LH, United Kingdom Department of Soil Science, School of Human and Environmental Sciences, University of Reading, Whiteknights, Reading RG6 6DW, United Kingdom;

    Department of Soil Science, School of Human and Environmental Sciences, University of Reading, Whiteknights, Reading RG6 6DW, United Kingdom;

    Centre for Forestry and Climate Change, Forest Research, Alice Holt Lodge, Farnham, Surrey GU10 4LH, United Kingdom;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ecological risk assessment; food-chain transfer; stinging nettle; snail; earthworm;

    机译：生态风险评估;食物链转移;荨麻;蜗牛;蚯蚓;

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